Here is the read me from Stern. It lists 5.0 as the latest.

* STERN PINBALL, INC.
* (C) COPYRIGHT 1999-2005, STERN PINBALL, INC.
*
------------------------------------------------------------------------------
CPU Release 5.00
Date October 26, 2005

sopcpua.500 checksum $B5FF - ENGLISH
sopcpug.500 checksum $22FF - GERMAN
sopcpuf.500 checksum $54FF - FRENCH
sopcpul.500 checksum $05FF - SPANISH
sopcpui.500 checksum $C2FF - ITALIAN

------------------------------------------------------------------------------
Display Release 5.00
Date October 26, 2005

sopdspa.500 checksum $B4BB - ENGLISH
sopdspg.500 checksum $3952 - GERMAN
sopdspf.500 checksum $7927 - FRENCH
sopdspl.500 checksum $569C - SPANISH
sopdspi.500 checksum $F80D - ITALIAN

**************************
Changes from last release:
- added Russian coinage & tournament settings

------------------------------------------------------------------------------
CPU Release 4.00
Date October 11, 2005

sopcpua.400 checksum $E8FF - ENGLISH
sopcpug.400 checksum $53FF - GERMAN
sopcpuf.400 checksum $8AFF - FRENCH
sopcpul.400 checksum $57FF - SPANISH
sopcpui.400 checksum $F8FF - ITALIAN

------------------------------------------------------------------------------
Display Release 4.00
Date October 11, 2005

sopdspa.400 checksum $DAA5 - ENGLISH
sopdspg.400 checksum $5338 - GERMAN
sopdspf.400 checksum $9535 - FRENCH
sopdspl.400 checksum $814A - SPANISH
sopdspi.400 checksum $1AE1 - ITALIAN

**************************
Changes from last release:
- ToPS improvements for South Africa
- Fixed UK1 pricing table settings.

------------------------------------------------------------------------------
SOUND Release
Date April 19, 2005

sopsnda.u7 checksum $9B5A - ENGLISH

------------------------------------------------------------------------------
CPU Release 3.02
Date April 7, 2005

sopcpua.302 checksum $A1FF - ENGLISH
sopcpui.302 checksum $ABFF - ITALIAN

**************************
Changes from last release:
- Fixed swearing accounting if adult mode is set to YES.
- Increased how often the game swears.

------------------------------------------------------------------------------
CPU Release 3.01
Date April 4, 2005

sopcpua.301 checksum $A2FF - ENGLISH

**************************
Changes from last release:
- Increased the amount of swearing the game will do if set to Adult ON.
- Increased the frequency of Secret Mania from the Pork Store.

------------------------------------------------------------------------------
CPU Release 3.00
Date March 18, 2005

sopcpua.300 checksum $C2FF - ENGLISH
sopcpui.300 checksum $FOFF - ITALIAN
sopcpug.300 checksum $4CFF - GERMAN
sopcpuf.300 checksum $82FF - FRENCH
sopcpul.300 checksum $4DFF - SPANISH

------------------------------------------------------------------------------
Display Release 3.00
Date March 18, 2005

sopdspa.300 checksum $CA6B - ENGLISH
sopdspi.300 checksum $19E2 - ITALIAN
sopdspg.100 checksum $4756 - GERMAN
sopdspf.100 checksum $7FB3 - FRENCH
sopdspl.100 checksum $58AC - SPANISH

------------------------------------------------------------------------------
Sound Release 3.00
Date March 18, 2005

ENGLISH
Sound 512k U7 $585C 3.00 sopsndg.u7
Voice 1 8M U17 $F01E 3.00 sopsndg.u17

ITALIAN
Voice 1 8M U17 $79B5 3.00 sopsndg.u17

GERMAN
Voice 2 8M U21 $7124 3.00 sopsndg.u21

FRENCH
Voice 1 8M U17 $140D 3.00 sopsndf.u17

SPANISH
Voice 2 8M U21 $1A23 3.00 sopsndl.u21

**************************
Changes from last release:
- Added display efect blow-off. Some display effects can now be ended by
pressing both flippers.
- Changed the display art for Bing if set to adult mode off.
- Added Middle East dip switch setting. If set to Middle east Pork Store is
changed to "The Deli" and all pig refferences are removed. Also, the
Bing girl silhouette is changed.
- Adjusted the percent that Pork Store chooses award Hold Spinner.

------------------------------------------------------------------------------
CPU Release 1.07
Date March 8, 2005

sopcpug.107 checksum $64FF - GERMAN
sopcpuf.107 checksum $E9FF - FRENCH
sopcpui.107 checksum $57FF - ITALIAN
sopcpul.107 checksum $9EFF - SPANISH

------------------------------------------------------------------------------
CPU Release 2.04
Date March 8, 2005

sopcpua.204 checksum $3EFF - ENGLISH

**************************
Changes from last release:
- Restored Secret Mania back to Ampersand Mania.

------------------------------------------------------------------------------
CPU Release 2.03
Date March 8, 2005

sopcpua.203 checksum $FBFF - ENGLISH

**************************
Changes from last release:
- Fixed "Give me your f-ing Money" could come up in Adult Mode "PARTIAL" or
Adult Mode "OFF". This was introduced in V2.02
- Fixed the frequncy of swears in a game. The game will now more acurately
track how much swering it does.
- Fixed Secret Mania from Pork Store. It was not awarding this and now it
will.

------------------------------------------------------------------------------
CPU Release 2.02
Date March 7, 2005

sopcpua.202 checksum $C6FF - ENGLISH

**************************
Changes from last release:
- Changed the F-ing Big Points display effect to use the "Big Points"
art work.
- Increased the frequncy of the swearing if the game is set to Adult
mode "ON"
- Added "Give me the Money" (an its derivitives) to the start button if
pressed when there are no credits.
- Increased the Replay factory setting to 35 million.
- Increased the frequnecy of Ampersand Mania from the Pork Store.
- Reduced the amount of time that Ampersand Mania runs to 20 "seconds".
- Removed the girls in the Bing mode display effects changing them to
more generic effects if the game is set to Adult Mode "OFF".
- Changed the Bump N Win factory setting.
- Changed the Ampersand Mania display effect to be more generic and Changing
the mode to Secret Mania.

------------------------------------------------------------------------------
CPU Release 2.01
Date March 3, 2005

sopcpua.201 checksum $9EFF - ENGLISH

**************************
Changes from last release:
- Fixed Flashers effects so when all black during Executive Game or Pork
Store The Fish lamps will be muted.
- Moved the "Shit" speech call from Adult mode "PARTIAL" to Adult mode "ON".

------------------------------------------------------------------------------
CPU Release 2.00
Date March 2, 2005

sopcpua.200 checksum $07FF - ENGLISH

------------------------------------------------------------------------------
Display Release 2.00
Date March 2, 2005

sopdspa.200 checksum $3AB0 - ENGLISH

**************************
Changes from last release:
- Fixed Advance Boss Audits
- Fixed Advance Boss lamps turning off when they should not.
- Fixed Horse Race back ground lamp effect so it flashes the
correct lamp.
- Fixed Flashers effects so when all black during Executive Game or Pork
Store The Safe flashers will be muted.

- Added F-ing Big Point to Pork Store in Adult mode only.
- Added Ampersand Mania if you hit the flippers 3 times during F-ing Big
points comes up in the Pork Store. [ONLY IN ENGLISH ROMS]
- Adjusted the Big Points percent from Pork Store to be more fun.
- Adjusted the Extra Ball percent from Pork Store to not come up
as often if you are high in rank.

------------------------------------------------------------------------------
CPU Release 1.04
Date February 24, 2005

sopcpua.104 checksum $A8FF - ENGLISH
sopcpug.104 checksum $D0FF - GERMAN
sopcpuf.104 checksum $02FF - FRENCH
sopcpui.104 checksum $A1FF - ITALIAN

------------------------------------------------------------------------------
Sound Release 1.04
Date February 22, 2005

ENGLISH
Sound 512k U7 $576B 1.04 sopsnda.u7
Voice 1 8M U17 $571A 1.04 sopsnda.u17
Voice 2 8M U21 $C14C 1.04 sopsnda.u21
Voice 3 8M U36 $47A3 1.04 sopsnda.u36
Voice 4 8M U37 $ADCD 1.04 sopsnda.u37

**************************
Changes from last release:
- Fixed Food Fight background display effect to show the correct value.
- Fixed the ocasional 3-Ball Stugots. It should only be 2 balls.
- Fixed Add-A-Ball from the fish if balls are locked in Underboss. It will
not try to Add-A-Ball if there are none to add.

- Changed start episode to use the HBO SFX
- Restart underboss from the fish during grace now works.
- The Advance Boss lamps are now not re-initalized untill the end of boss.
- Jackpot will not grow from the drop target unless you are in Stugots.
- Orbit power gates will now only open during episodes if the player is
shooting an orbit and the episode is giving an award.
- Increased the pause slightly of the dancers' motor before starting them
again in an effort to make sure they are stopped before restarting
in potentialy a new direction.
- Underboss now ends if you are down to 1 ball during the timer and you have
no balls locked.
- Changed Pork Store to give away Extra Ball less often if the player is
high on the rank ladder.

------------------------------------------------------------------------------
CPU Release 1.03
Date February 22, 2005

sopcpua.103 checksum $3309 - ENGLISH
sopcpug.103 checksum $D9FF - GERMAN
sopcpuf.103 checksum $02FF - FRENCH
sopcpui.103 checksum $0918 - ITALIAN
sopcpul.103 checksum $D9FF - SPANISH

------------------------------------------------------------------------------
Display Release 1.00
Date February 22, 2005

sopdspg.100 checksum $7730 - GERMAN
sopdspf.100 checksum $A81D - FRENCH
sopdspl.100 checksum $82DF - SPANISH

------------------------------------------------------------------------------
Sound Release 1.00
Date February 22, 2005

GERMAN
Sound 512k U7 $B3FF 1.00 sopsndg.u7
Voice 1 8M U17 $0DFF 1.00 sopsndg.u17
Voice 2 8M U21 $18B8 1.00 sopsndg.u21
Voice 3 8M U36 $42B6 1.00 sopsndg.u36
Voice 4 8M U37 $A99D 1.00 sopsndg.u37

FRENCH
Sound 512k U7 $569D 1.00 sopsndf.u7
Voice 1 8M U17 $0B09 1.00 sopsndf.u17
Voice 2 8M U21 $622B 1.00 sopsndf.u21
Voice 3 8M U36 $3633 1.00 sopsndf.u36
Voice 4 8M U37 $0BA4 1.00 sopsndf.u37

SPANISH
Sound 512k U7 $4B73 1.00 sopsndl.u7
Voice 1 8M U17 $1578 1.00 sopsndl.u17
Voice 2 8M U21 $111F 1.00 sopsndl.u21
Voice 3 8M U36 $3BE0 1.00 sopsndl.u36
Voice 4 8M U37 $1A8F 1.00 sopsndl.u37

**************************
Changes from last release:
- Fixed stugots from ending when underboss goes to 1 ball.
- Fixed the satisfaction background lamp effect. It was going too slow.
- The powered gates will now open in test when the orbits are activated.
- Reduced the time that super skill shot is active to be more challenging.
- Increased the display priority for start party at the Bing.

------------------------------------------------------------------------------
CPU Release 1.02
Date February 21, 2005

sopcpua.102 checksum $96FF - ENGLISH

------------------------------------------------------------------------------
Sound Release 1.02
Date February 21, 2005

ENGLISH
Sound 512k U7 $335E 1.02 sopsnda.u7

**************************
Changes from last release:
- The G.I. will no longer turn off during episode lamp effects.
- The super skill shot: safe will no longer award a full safe explosion.
- Bump-N-Win value is based on 10M now.

------------------------------------------------------------------------------
CPU Release 1.01
Date February 19, 2005

sopcpui.101 checksum $10FF - ITALIAN

------------------------------------------------------------------------------
Sound Release 1.01
Date February 19, 2005

ITALIAN
Sound 512k U7 $504D 1.01 sopsndi.u7

**************************
Changes from last release:
- Fixed Ball search. It was restarting because the safe would sometimes score.

- Changed The Main play tune and how the tune sounds comming back from other
tunes or on balls other than ball one.
- Changed Ball saver to 8 seconds for all countries except France. Changed
France ball saver time to zero seconds.

------------------------------------------------------------------------------
CPU Release 1.00
Date February 18, 2005

sopcpua.100 checksum $1FFF - ENGLISH
sopcpui.100 checksum $C1FF - ITALIAN

------------------------------------------------------------------------------
Display Release 1.00
Date February 18, 2005

sopdspa.100 checksum $FFCA - ENGLISH
sopdspi.100 checksum $4106 - ITALIAN

------------------------------------------------------------------------------
Sound Release 1.00
Date February 18, 2005

ENGLISH
Sound 512k U7 $9909 1.00 sopsnda.u7
Voice 1 8M U17 $BC36 1.00 sopsnda.u17
Voice 2 8M U21 $A7CD 1.00 sopsnda.u21
Voice 3 8M U36 $A7E9 1.00 sopsnda.u36
Voice 4 8M U37 $0316 1.00 sopsnda.u37

ITALIAN
Sound 512k U7 $241F 1.00 sopsndi.u7
Voice 1 8M U17 $70b1 1.00 sopsndi.u17
Voice 2 8M U21 $A5E1 1.00 sopsndi.u21
Voice 3 8M U36 $E7DD 1.00 sopsndi.u36
Voice 4 8M U37 $9D68 1.00 sopsndi.u37